body{
	margin:0px;
	padding:0px;
}
header{
	margin:0 auto;
	width:100%;
	text-align: center;
}
header #newGame{
	background-color:#8f7a66;
	display:block;
	padding:10px;
	width:100px;
	color:#ffffff;
	border-radius: 10px;
	text-decoration: none;
	margin:0 auto;
}
header #newGame:hover{
	background-color:#bbada0;
}

#grid{
	position:relative;
	background-color:rgb(156,38,50);
	width:500px;
	height:500px;
	margin:10px auto;
}
.grid-cell{
	width:100px;
	height:100px;
	background-color:rgb(71,31,31);
	position: absolute;
}

.number-cell{
	position: absolute;
	text-align: center;
	line-height: 100px;
	font-size:48px;	
}